fix the documentation

This repo actually has 3 different packages which are documented independently.

fixes #3

README.md

@@ -3,7 +3,6 @@
 [![](https://img.shields.io/badge/made%20by-Protocol%20Labs-blue.svg?style=flat-square)](http://ipn.io)
 [![](https://img.shields.io/badge/project-IPFS-blue.svg?style=flat-square)](http://ipfs.io/)
 [![standard-readme compliant](https://img.shields.io/badge/standard--readme-OK-green.svg?style=flat-square)](https://github.com/RichardLitt/standard-readme)
-[![GoDoc](https://godoc.org/github.com/ipfs/go-ipfs-routing?status.svg)](https://godoc.org/github.com/ipfs/go-ipfs-routing)
 [![Build Status](https://travis-ci.org/ipfs/go-ipfs-routing.svg?branch=master)](https://travis-ci.org/ipfs/go-ipfs-routing)
 
 > go-ipfs-routing provides go-libp2p-routing implementations used in go-ipfs.
@@ -17,27 +16,60 @@
 
 ## Install
 
-`go-ipfs-routing` works like a regular Go module:
+`go-ipfs-routing` works like a set of regular Go packages:
 
 ```
-> go get github.com/ipfs/go-ipfs-routing
+> go get github.com/ipfs/go-ipfs-routing/...
 ```
 
-This module uses [Gx](https://github.com/whyrusleeping/gx) to manage dependencies. You can use `make all` to build it with the `gx` dependencies.
+This module uses [Gx](https://github.com/whyrusleeping/gx) to manage
+dependencies. You can use `make all` to build it with the `gx` dependencies.
 
 ## Usage
 
+This repo contains 3 different packages.
+
+### Mock
+
+[![GoDoc](https://godoc.org/github.com/ipfs/go-ipfs-routing/mock?status.svg)](https://godoc.org/github.com/ipfs/go-ipfs-routing/mock)
+
+```
+import "github.com/ipfs/go-ipfs-routing/mock"
+```
+
+Mock is a fake router useful for tests. It provides a mock client that
+implements the `IpfsRouting` interface and a mock server from which the client
+retrieves routing records.
+
+
+### Offline
+
+[![GoDoc](https://godoc.org/github.com/ipfs/go-ipfs-routing/offline?status.svg)](https://godoc.org/github.com/ipfs/go-ipfs-routing/offline)
+
+```
+import "github.com/ipfs/go-ipfs-routing/offline"
+```
+
+Offline is an offline router that can put and get records to and from a local
+`Datastore` but can't retrieve them from the network.
+
+### None
+
+[![GoDoc](https://godoc.org/github.com/ipfs/go-ipfs-routing/none?status.svg)](https://godoc.org/github.com/ipfs/go-ipfs-routing/none)
+
 ```
-import "github.com/ipfs/go-ipfs-routing"
+import "github.com/ipfs/go-ipfs-routing/none"
 ```
 
-Check the [GoDoc documentation](https://godoc.org/github.com/ipfs/go-ipfs-routing)
+None is a router no-op router that doesn't do anything. Puts always succeed and
+lookups always fail.
 
 ## Contribute
 
 PRs accepted.
 
-Small note: If editing the README, please conform to the [standard-readme](https://github.com/RichardLitt/standard-readme) specification.
+Small note: If editing the README, please conform to the
+[standard-readme](https://github.com/RichardLitt/standard-readme) specification.
 
 ## License